Users can use the Internal Notes feature to record any details about an article
that will not be publicly visible.
Steps to add an internal note
Go to the article details page.
Click on the three-dot icon on the top right.
Click on Add internal notes.
A right side pane appears and you can enter your note.
Click on Save changes.
When the note is present for an article, the notes icon will be shown in the header making it easier to access/update the notes.